Tension device for warp-beams.



No. 818,829. PATENTED APR. 24, 1906. G. KELLER. TENSION DEVICE FOR WARP BEAMS.

.APPLICATION` FILED JUNE 13, 1905.

WIT/VESSES:

NITED STAES PATENT OIiFIOE.

GOTTLIEB KELLER, OF NEr YORK, N. Y., ASSIGNOR TO KELLER MACHINE COMPANY, A CORPORATION OF NEIV YORK.

TENSION DEVICE FOR WARP-BEANIS..

Specification of Letters Patent.

Patented April 24, 190e.

Application filed June 13,1905. Serial No. 264,988.

To all whom it 717,614/ concern,.-

Be it known that I, GOTTLIEB KELLER, a citizen of the Republic of Switzerland, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Tension Device for I/Varp-Beams, of which the following is a full, clear, and exact description.

The invention relates to tension devices for warp-beams-such, for instance, as shown and described in Letters Patent of the United States No. 801,595, dated October 10,1905.

The object of the present invention is to provide a new and improved tension device for warp-beams o1 warp-carrying spools arranged to permit minute and convenient reg-- ulation for producing the desired tension on the warp, according to the nature thereof, and to provide a long range of movement of the beam.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings,

forming a part of this specification, in whichv similar characters of reference indicate corresponding parts in both views.

Figure 1 is a rear face view of the improvement; and Fig. 2 is a transverse section of the same as applied to the warp-beam, the section being on the line 2 2 of Fig. 1.

One end of the warp-beam A is engaged by studs B, projecting from the rear face of a wheel C, preferably in the form of a ratchetwheel and provided with a transverse pin D, engaging the outer end of a spiral spring E, fastened with its inner end to a stud F, proj ecting from the peripheral surface of a wheel G, the hub G' of which forms a bearing for one end of the shaft A' of the warp-beam A, the other end of the shaft being journaled in the usual manner in a suitable bearing on the frame of the loom. The hub G is j ournaled in a bearing on a bracket H, held adjustable on one side I of the loom-fraiiie by the use of a bolt H', engaging the side I and extending through an elongated slot H2, formed in the bracket H.

The spring E is contained within a springcasing J, mounted to rotate on the hub G of the wheel G, and the rim of the said casing is provided with an annular flange J',havng a plurality of Aspaced transverse apertures J2, the top one of which is adapted to be engaged by a pivot-pin K of a pawl K, adapted to engage the teeth of the ratcliet-wlieel C.

The wheel G forms a resistance member for the spring E, and in order to give the desired resistance to this wheel a tension device L is provided, preferably consisting of a coilspring L', resting with one end on the outer face of the casing J and abutting with its other end on a washer L2, engaged by a nut L2, screwing on the threaded portion G2 of the hub G' of the resistance-wheel G. By screwing up or unscrewing the nut L3 more or less tension is given to the spring L', so that the resistance-wheel G is forced at its web with more or less force in contact with the inner surface of the casing J to give the wheel G more or less resistance--that is, to cause it to resist the turning action of the spring E.

As shown in the drawings, the washer L2 is preferably provided with a tongue L4, proj ecting into a longitudinal groove G2, formed on the threaded portion G2 of the hub G', to cause the washer L2 to turn with the hub G of the resistance-wheel G. The inward movement of the washer L2, and consequently the screwing-up motion of the nut L2, is limited by a stop-shoulder G4, formed on the hub G. (See Fig. 2.)

In order to wind up the spring E until the resistance of the resistance-wheel G is overcome, so that the latter turns with the wheel O and the warp-beam A, it is necessary to turn the casing J and for this purpose the rim thereof is provided with spaced apertures J2, adapted to be engaged by a Spannerwrench or like tool for turning the casing, and with it the tension device L and the wheel G, until the spring E is wound up to the desired degree-that is, to the tension required by tlie warp on the beam A. Ihen this has been done, a key N, fitted to slide in a bearing H3 on the bracket H, is engaged with one of a series of apertures J t, formed in the outer face of the casing J to hold the latter against rotation, as illustrated in Fig. 2.

The operation is as follows: I/Vhen the several parts are in the position as illustrated in Fig. 2, then the spring E is wound up to suoli a degree that it gives the desired tension to the warp on the warp-beam A, and when the loom is in action and the usual pull IOO ' the nut L3 to increase the resistance of the .wheel G relative to the-spring E, andwhen less tension onthe warp is required the nut L3 is Jcorrespondingly unscrewed on the threaded portion G2. As the casing J is held against turning. by thekey Niand the pawl K is in engagement with the teeth of the ratchet-wheel C, it is evident that the latter, as wellv as the warp-beam A, are held against accidentalreturn movement. When it is desired to let off the warp-beam for unwinding the warp a desired length, then the operator applies aspanner-wrench or like .tool to the apertures J3 to give suflicient turning movement to the casing J for convenient withdrawal of the key N to permit the whole'device to rotate with the warp-beam A-that is, the wheel C, casing J, resistance-wheel G,

spring E, vand tension device L'move together in unison withoutthe several parts changing their relative positions to each other-and whenthe warp` has been unwound the desired distance and it is again desired to restart it is'o'nly necessary `for the operatorV to engage the key N with `one of the apertures J4, so that the casing J is held against turning movement, and the turning of the warp-beam A can now proceed with the same amount of tension on as it had before and to whichv the device is set; In some cases it is desirable ato hold the casing J against turning while letting off the warp-beam A, andfin suchcases it is only necessary for the opera- `tor to throwrthe pawl K out of engagement with the ratchet-wheel C to allow the parts to turn in unison with'each other, withthe eX- Aception of the casing J, at the same time retaining, however, the tension of thespring E.

The pawl K should be at all times at the top of the casing within convenient reach of .the operator, yand for this purpose-I provide a plurality. of openings J 2 to receive the pivotpin K ofthe pawl.

They device shown and described is very simple and durablein construction, is not -liablefto get easily out of order, and any desired amount of tension can be given to the .warp-beam Arby winding upthe spring- E v correspondingly, and the tension-can beincreased or decreased while the machine is running byadjusting the tension device Lto.

increase or decrease the resistance given by the wheel G to the turning motion ofthe spring E.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent- 1.k A tension device for warp-beams, com- `prising two rotatable members, a spiral spring connected at its ends with the said members, one of the membersv rotating with the warpbeam, an adjustable tension device for the other member, and means for locking the warp-beam member against return movement.

2. A tension device for warp-beams, comprising a warp-beam -member rotating with the warp-beam, -a resistance member lhaving independent rotating motion relative to the said warp-beam member, a spiral spring connecting the members with each other, and a tension device for governing the rotating movement' of thel saidv resistance member, anda releasable connection between the tension device and the warp-beam member.

3. A tension device Vfor warp-beams, comprising a warp-beam member rotating with the warp-beam, a resistance member having independent rotating motion Arelative to the said warp-beam member, a spiral spring connecting the members with each other, a tension device for governing the rotating movement of the said resistance member, a casing for the spring engaged by the said tension device, and a releasable connection between the casing and the warp-beam-member.

4. A tension device for'warp-beams, comprising a warp-beam member rotating with the warp-beam, a resistance rmember having independent rotating motionfrelative to the said warp-beam member, a spiral spring connecting the members with each other, a tension device for governing the rotating movement of the said resistance member, a rotatable casing for the said spring, and a releasable connection between the casing and the warpbeam member.

5. A tension device for warp-beams, comprising a warp-beam member'rotating with the warp-beam, a resistance member lhaving independent-rotating motion relative to the said warp-beam member, a spiral spring con- .'necting the members with each other, a tension devicet for governing the rotating movement ofthe said resistance member, a casing `for thesaid spring adapted to turn with the said resistance member, and means fork locking the casing against turning.

6. A tension. device for warp-beams, comprising a warp-beam member rotating fwith the warp-beam, a resistance member having independent rotating motion relative to the said warp-beam member, aspiral spring connecting the` members with eachother, a tension device for governing the rotating movement of the said resistance member, acasing for the said spring, and a pawl-and-ratchet connection ybetween the said casing and the said warp-beam member.

7. A tension device for warp-beams, com- IOO ISO

prising a ratchet-Wheel turning With the Warp-beam7 a resistance\vheel mounted to turn independent of the said ratchet-Wheel, a spiral spring connecting the ratchet-Wheel with the said resistance-Wheel, a revoluble casing for the said spring, and a pawl on the casing for engaging the said ratchet-Wheel.

S. A tension device for warp-beams, coinprising a ratchet-wheel turning with the Warp-beam, a resistance-Wheel mounted to turn independent of the said ratchet-Wheel, a spiral spring connecting the ratchet-Wheel With the said resistance-Wheel, a revoluble casing for the said spring, a pawl on the casing Vfor engaging the said ratchet-wheel, and a tension device for the said resistance-Wheel.

9. A tension device for Warp-beams, comprising a ratchet-Wheel turning with the warp-beam, a resistance-Wheel mounted to turn independent of the said ratchet-Wheel, a spiral spring connecting the ratchet-Wheel with the said resistance-Wheel, a revoluble casing for the said spring, a pawl on the casing for engaging the said ratchet-Wheel, and manually-controlled means Jfor locking the casing in position.

l0. A tension device for Warp-beams, comprising a ratchet -Wheel turning with the warp-beam, a resistance-wheel mounted to turn independent of the said ratchet-Wheel7 a spiral spring connecting the ratchet-Wheel with the said resistance-Wheel, a revoluble casing for the said spring, a pawl on the casing for engaging the said ratchet-wheel, and a tension device Vfor the said resistance-Wheel and engaging the said casing for winding up the spring on turning the casing.

11. A tension device for warp-beams, comprising a ratchet wheel turning with the Warp-beam, a resistance-Wheel mounted to turn independent of the said ratchet-Wheel, a spiral spring connecting the ratchet-Wheel with the said resistance-Wheel, a revoluble casing for the said spring, a pawl on the casing for engaging the said ratchet-Wheel, a tension device for the said resistance-Wheel and engaging the said casing for winding up the spring on turning the casing, and manually controlled means for locking the casing against movement.

In testimony whereof I have signed my name to this specication in the presence ot' two subscribing Witnesses.

GOTTLIEB KELLER.

lVitnesses THEO. G. HosTER, J No. M. RITTER. 

